Ball-cock



No Model.)

0. E. SENNA...

I BALL 000K. No. 547,620. v Patented Oct. 8, 1895.

\x/lfllassas: M INVEN UR: #Jflm 34M,

CHARLES E. SENN .NITED STATES FFICE.

A, OF SOUTH FRAMINGHAM, ASSIGNOR TO eiLcHnisT & TAYLOR, or BOSTON,MASSACHUSETTS.

BALL-=COC K.

SPECIFICATION forming part of Letters Patent No. 547,620, dated October8, 1895.

A plication filed Mme 29, 1895. Serial No. 543,661; (Ho mas.)

To all whom it may concern: Be it known that 1, CHARLES E. SENNA, ofSouth Framingham, in the county of Middlesex and State of Massachusetts,have invented 5 certain new and useful Improvements in Bali- Cocks, ofwhich the following is a specification.

This invention relates to that class of cocks or valves for controllingthe admission of wao ter into su pply-tanks in which a valve isconnected with a pivoted lever having a float supported by thewater inthe tank, the float rising and falling with the water and opening avalve when the water falls to a predeter- 5 mined level and .closing thevalve when the waterrises to another predetermined level.

The invention has forits object to provide certain improvements incocksof this class, whereby their operation is made more satis- 2ofactory and efficient; and to this end the inveution consists in theimprovementswhich I will now proceed to describe and claim.-

' Of the accompanying drawings, forming a part of this specification,Figure 1 represents 25 a longitudinal section of a ball-cock embody ingmy improvements. Fig. 2 represents a. section on line 2 2 of Fig. 1.

The same letters and numerals of reference indicate the same parts inboth the figures.

1n the drawings, a represents a water-tank which is supplied with waterby the improved cock hereinafter described, said tank having an outletfrom which water is drawn from time to time. 5 1) represents the mainportion or casing of my improved cock, which is'secured in any suitableway to the tank and preferably to the upper edge thereof, as shown inFig. 1. Said casing comprises acentral chamber 3, an inlet 4,communicating with one end of said chamber and surrounded by avalve-seat- 5, an internally-screw-threaded extension 6, projec'tingfrom the end of the chamber opposite the valve-seat, alateral outlet 7,extending 5 downwardly from't-he' chamber and adapted to discharge waterinto the-'tank, andan extension 8, formed on the end of the chamberopposite the extension 6. and containing a chamber 9, which communicateswith the in- 50 let 4, said extension having an externallythreadedportion and a reduced inlet 12 of I jectionabl smaller diameter than thechamber 9 and inlet 4.

0 represents a valve having a stem 0 and arranged to open and close thevalve-seat 5. d represents a nut having a central perforation formed toreceive the valve-stem c, said nut being externally threaded and formedto engage the thread in the extension 6. I The inner portion of the nutdis reduced in diame- 6o ter, so that an annular space or chamber 13 isformed between the'interior of the extension 6 and the reduced portionof the nut d, j said annular chamber communicating with the chamber 3.

- The casing in is provided with a passage 14, connecting the annularchamber 13 with the outlet 7, the arrangement being such that waterflowing through said outlet draws the wa- -ter from the annular chamber13 away from ya the screw thread connection between the nut d andextension 6, thuspreventing the existence. of pressure tending to causeleakage of water between said nut and extension.

6 represents a lever which is pivoted at e to ears d formed on the nut01. One arm of said lever projects into a-slot c in the valvestem 0',the other arm of said lever being extended in the form of a rod 6 to theouter end of which is connected a float 2 adapted to be supported by theaccumulation of water in the tank. \Vhen the water rises the lever e' ismoved to close the valve, and when the water falls the lever is moved toopen the valve, as will be readily seen. I

f representsa supply or inlet pipe, which is connected by a coupling gwith the threaded portion 10 of the casing, water passing from said pipef through thereduced inlet 12,chamber 9, and inlet 4 to the chamber 3,from whence it emerges through the outlet 7 into the tank. Thereducedinlet 12 is of smaller diameter than the inlet-pipe f, and, as alreadystated,is of smaller diameter than the. chamber 9 and inlet 4.. is toprevent the water from making an obe noise in passing through the spacebetween the inlet 4; and the valve when the valve is being closed andsaid space is being contracted. The reduced inlet so contracts thevolume of water that before it reaches the valve it will pass, withoutnoise, between the The object of this reduced inlet 9 3 I,

valve and seat, even when the valve is nearly closed. It should beobserved that the valve closes against the water-pressure, and istherefore closed slowly, so that the noise above men tioned would beprotracted and objectionable if not prevented by this contracted inlet12. It will be seen that the annular chamber 13 and the passage 14connecting said chamber with the outlet rendermy improved device lessliable to leakagearound the nut which supports and gnidesthe valve-stemand thus increases the efliciency of the device.

In a ball-cock, the casing having the central chamber, an inletsurrounded by a valve-seat at one end of said chamber,the'screw-threaded extension at the other end of the chamber, a lateraloutlet between said inlet and extension, and a passage connecting thesaid extension with the outlet; combined with the perforated nut screwedinto said extension and reduced at its inner end to form an annularspace between the extension and the nut, said space communicating withthe chamber and with the passage, the valve having a stem fitted toslide in the nut, and the float-lever pivoted to then utand engaged withthe valvestem.

In testimony whereof I have signed my name to this specification, in thepresence of two subscribing Witnesses, this 21st day of March, A. D.1895.

CHARLES E. SENNA. Witnesses:

J. H.ALEXANDER, J OHN MAn'rENs.

